Pulley-frame.



PATBNTED APR. 9.11907.4

L. ZAMBONI. PULLEY FRAME.

APPLICATION FILED IAN. 2a. 1905.

FIG

w'lTNssII-SLNT UNITE@ STATES PATENT OFFTQE.

LAWRENCE ZAMBONI, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE AMERICAN PULLEY COMPANY, OF PHILADELPHIA, PENN SYLVA- NIA, A CORPORATION OF PENNSYLVANIA.

PULLEY-FRANIE.

Specification of Letters Patent.

Patented April 2, 1907.

Application filed January 28, 1905. Serial No. 243,006.

To all whom, it 77u01/ concern,.-

Be it known that I, LAWRENCE ZAMBONI, of Phi@` adelphia, in the State of Pennsylvania, have invented certain new and useful Improveiiients in Pulley-Frames, whereof the following is a specification, reference being had to the accompanying drawings.

My improvements relate to frames for window-sash pulleys and may be employed with particular advantage in such frames designed to be sot in the soflit of a windowframe.'

It is an object of my invention to provide suoli a frame which can be conveniently manufactured from a single piece of pressed sheet metal at less cost than the cast-metal frames heretofore employed.

As hereinafter described, my invention includes a frame comprising a hollow faceplate, which is adapted to be set in the soffit of the window-frame and which is provided with lateral flanges ar anged to rest upon the upp r end of the pulley-stile, so that the latter supports the pulley-frame and the sash and weight pendent from ihe opposite sides of he pulley and only a single screw is required at :he free end of the pulley-frame to retain the latter.

My invention comprises the various novel fea ures of construction and arrangement hereinafter more definitely specified.

In the drawings, Figure I is a top plan` view of a pulley-frame embodying my im provemcnts. Fig. II is a side elevation of said frame with the pulley mounted therein. Fig. III is an inverted plan view of .he frame and pulley shown in Fig. II. Fig. IV is a right-haiid end view of the frame and pulley shown in Fig. II. Fig. V is a sectional view of said frame, taken on the line VV in Fig. II. Fig. VI is a sectional view of said frame, taken on the line VI VI in Fig. II. F g. VII is a plan view of the blank from which said frame is formed. Fig. VIII is a sectional view of a modified forni of face-plate.

In said figures the hollow face-plate comprises the outer wall l, side walls 2, and inner walls 4, which are pressed from a single piece of sheet metal in unitary relation with the opposite pulley-housing members 7 having curved fianges S, which meet along ihe central line 10. (Best shown in Fig. I.) As shown in Fig. V, said housing members 7 are conveniently provided with circular recesses l2 surrounding the opposite ends of the pulleyshaft 14, which are riveted therein. Said shaft 14 holds the frame in closed position and supports the pull ey 16, which latter may be of any convenient construction, but is preferably formed of pressed sheet metal. Said face-plate wall l comprises the recess 18, through which the sash shaft-cord eX- teiids over the pulley 16, and the opposite housing members 7 being slit, as indicated at 20, adjoining said recess 18, are pressed inwardly to form recesses 2l and provided with horizontal outwardly-extending fianges 22, which afford a supporting-bearing upon the pulley-stile 23. (Indicated by the dotted lines in Figs. II and V.)

Referring to Figs. IV and V, it may be noted that the housings 7 are recessed, as indicated at 2]., above said fianges 22, and the latter turned outwardly so as to present a bearing as wide as possble upon said stile 23, which is necessarily cut away to receive the pulley 16, and that said flanges 22 are only made as wide as the face-plate in order to ermit the insertion of the whole pulleyframe through an opening in the windowfraine soffit no wider than said plate. It is to be understood that the arrangement described is such that only a single screw is required at the free end of the pulley-frame to retain the latter, said screw being conveniently-seated in the aperture 24 in the outer wall l of the face-plate and extending through the aperture formed by the registered recesses 25 in the inner walls 4 of said face-plate. Although I prefer to make said face-plate hollow by connecting its fiont wall 1 with the rear walls 4 by the side walls 2, as above described, it is to be understood that, as shown in Fig. VIII, its inner walls 30 may be formed of fianges turned inwardly from the edges of its outer wall I parallel with and in contact with the latter.

It is to be understood. that the frame above described may be conveniently pressed from a single piece of sheet metal having the configuration shown in Fig. VII, the first step in the operation being to form a hat plate of such configuration, and the subsequent steps of the pressing operation being such as to close said plate into the form shown in the preceding figures. may be conveniently effected by first bending the edges of the plate which are to meet,

Said closing operation IOO vIO

the end ot the hollow face-plate being formed by the flanges 27 in integral relation with its outer wall 1, then bending the sides of the housing with. respect to said outer wall 1 of the face-plate, and, finally, closing the housing members 7 together and securing them by riveting the shaft 14 after the supporting-flanges 22 have been shaped as describe It may be observed that the frame above described is so arranged as not only to be readily made at low cost, but aiiords the maximum rigidity of construction with a minimum amount of metal. For instance, the face-plate comprising the outer wall 1 and inner walls 4, maintained in spaced relation by the side walls 2, is much more rigid than if said side walls 2 were omitted and said outer and inner walls arranged in contact with each other.

Although I prefer to construct the pulleyframe in the manner above described, it is to be understood that various modiiications may be made therein without departing from the essential feature of my invention, which is the formation of a pulley-trame ot the class described having a hollow faceplate formed from a single piece comprising i the pulley-housings.

I claim-- 1. A pulley-frame comprising a hollow sheet-metal face-plate; pulley-housings in unitary relation with said face-plate; and flanges extending from said housings above said face-plate, arranged to bear upon the pulley-stile of a window-frame, substantially as set forth. i

2. In a pulley-frame, the combination with housing members extending upon opposite sides or the pulley; of a shaft extending l through the pulley in riveted engagement with said housing members; a hollow faceplate having its outer, inner and side walls in unitary relation with said housing members and, supporting-flanges for said frame having their free edges extending outwardly in unitary relation with said housing members in a plane parallel with said face-plate, but nearer to the axis of rotation of said pulley, substantially as set forth.

3. A pulley-frame comprising a tace-plate, sheet-metal pulley-housings secured to said face-plate and, flanges distinct from said face-plate, extending from said housings, arranged to engage a window-frame, subs-tantially as set forth.

41. A pulley-frameformed of a single piece of sheet metal, comprising housings extending upon opposite sides of the pulley, and a hollow face-plate in unitary relation with said housings; the end of said tace-plate being closed by flanges extending transversely with respect to the plane thereof, in unitary relation with said tace-plate, substantially as set Jforth.

5. A pulley-'frame comprising a hollow sheet-metal tace-plate having its outer, inner and side walls in unitary relation, the end of said tace-plate being closed by iianges extending transversely with respect to the plane thereof in unitary relation with said faceplate, substantially as set forth.

In testimony whereof I have hereunto signed my name, at Philadelphia, Pennsylvania, this 26th day et January, 1905.

LAWRENCE ZAMBONI.

Witnesses RUssELL H. BOWEN, JOHN W. MoNoGUn. 

